Thermal behaviour of switchable nematic emulsions

We have investigated the electro-optical performance of switchable nematic emulsions as a function of temperature. The electro-optical properties of n ematic emulsions are highly dependent on temperature because several parame ters such as droplet size, number density, viscosity, surface free energy, elastic constant, refractive indices, dielectric anisotropy, and liquid cry stal/monomer solubility are affected by temperature. In particular, both ON state transmittances and decay limes show a decreasing behaviour with incr easing temperature. On the contrary, the OFF state transmittances increase, and the rise times do not change in an appreciable way.